Bonus: They may already be in your fridge. Double-bonus: We've got the info, short and sweet.

Hemp seeds

Hemp seeds

You don’t have to be a Grateful Dead fan to get on board with these seeds. They’re a great source of omega-3 and omega-6 fatty acids, both of which improve blood flow to your muscles, revving up your metabolism. Plus, they reduce inflammation.

Matcha

Matcha

Yup, that’s just a fancy word for green tea. It not only packs a bit of caffeine, which speeds up your heart rate and thus your metabolism, but it also has norepinephrine-stimulating EGCG, a nutrient that helps boost your metabolic rate.